Abstract: A tubular sheath for enclosing an expandable balloon attached to the distal portion of a catheter encloses and protects the expandable balloon. The tubular sheath is configured to be slidable and removable from the catheter. The tubular sheath may include a longitudinal splitting element that is removable as a result of a force applied to the longitudinal splitting element. The longitudinal splitting element is configured to split the wall of the tubular sheath in response to the force. Alternatively, the tubular sheath may include a gripping portion that has relatively poor cohesive strength to adjacent portions of the tubular sheath. The tubular sheath is configured to be removable in response to a force applied to the gripping portion.

Abstract: A tubular sheath for enclosing an expandable balloon attached to the distal portion of a catheter encloses and protects the expandable balloon. The tubular sheath is configured to be slidable and removable from the catheter. The tubular sheath may include a longitudinal splitting element that is removable as a result of a force applied to the longitudinal splitting element. The longitudinal splitting element is configured to split the wall of the tubular sheath in response to the force. Alternatively, the tubular sheath may include a gripping portion that has relatively poor cohesive strength to adjacent portions of the tubular sheath. The tubular sheath is configured to be removable in response to a force applied to the gripping portion.

Abstract: A tubular sheath for enclosing an expandable balloon attached to the distal portion of a catheter encloses and protects the expandable balloon. The tubular sheath is configured to be slidable and removable from the catheter. The tubular sheath may include a longitudinal splitting element that is removable as a result of a force applied to the longitudinal splitting element. The longitudinal splitting element is configured to split the wall of the tubular sheath in response to the force. Alternatively, the tubular sheath may include a gripping portion that has relatively poor cohesive strength to adjacent portions of the tubular sheath. The tubular sheath is configured to be removable in response to a force applied to the gripping portion.

Abstract: An easel having a pair of segmented front legs and a segmented rear leg member with the legs and segments slidably joined by dovetails and dovetail grooves for varying easel height. The front leg segments, in addition to being extensible, are pivotally joined to the main members of the legs to permit angular positioning of the front leg segments to the vertical to serve as the front legs of the drafting table configuration. In this configuration, the upper ends of the main members are positioned downwardly along the rear leg member to provide a sloping, workpiece supporting surface in the nature of a drafting board. A detachable cross member serves to brace the vertical front leg segments against swaying while a brace assembly braces the connection between the main leg members and the rear leg member.

Abstract: A muzzle-loading gun including a hammer and a trigger configured so that the gun can only be armed by coordinated, simultaneous actuation of both the hammer and the trigger.